EP 0506140 B1 19961009 - Interrupt control unit
Title (en)
Interrupt control unit
Title (de)
Unterbrechungssteuerungseinheit
Title (fr)
Unité de commande d'interruption
Publication
Application
Priority
JP 6615391 A 19910329
Abstract (en)
[origin: EP0506140A1] In an interrupt controller, interrupt processing mode indication circuits are provided each for each interrupt request circuit for storing interrupt processing mode information, and priority level indication circuits are provided each for each interrupt request circuit, for storing acknowledgement order information. A search information generating circuits is provided each for generating interrupt processing mode search information and priority order search information. A search information comparison circuit detects the state of the interrupt request circuit provided for each interrupt request memory circuit, and compares the processing mode information and the acknowledgement order information with the interrupt processing mode search information and priority order search information. When the processing mode of the search information generating circuit coincides with one of the processing mode indication circuits, an internal interrupt receipt signal is generated by the search information comparison circuit in response to the interrupt request signals generated by the search information comparison circuits. When the processing mode of the search information generating circuit does not coincide with anyone of the processing mode indication circuits, the processing mode search information is updated and and an internal interrupt receipt signal is generated in response to the interrupt request signal generated by the search information comparison circuit when the priority order search information of the search information generating circuit perfectly coincides with the acknowledgement order information of one of the priority order indication circuit. <IMAGE>
IPC 1-7
IPC 8 full level
G06F 9/22 (2006.01); G06F 9/48 (2006.01); G06F 13/26 (2006.01)
CPC (source: EP US)
G06F 13/26 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0506140 A1 19920930; EP 0506140 B1 19961009; DE 69214337 D1 19961114; DE 69214337 T2 19970515; JP 2900627 B2 19990602; JP H04302035 A 19921026; US 5291606 A 19940301
DOCDB simple family (application)
EP 92105484 A 19920330; DE 69214337 T 19920330; JP 6615391 A 19910329; US 86066992 A 19920330